Sesquiterpene lactones and a myoinositol from glandular trichomes of
Viguiera quinqueremis (Heliantheae; Asteraceae).
Spring, O.; Zipper, R.; Reeb, S.; Vogler, B.; Da Costa, F. B.
Phytochemistry (2001), 57(2), 267-272.
The ext. of the floral parts of Viguiera quinqueremis afforded, in addn. to known compds., six new sesquiterpene lactones (e.g. I) as well as a new myoinositol deriv. (II). All compds. were detected in glandular trichomes which were collected micromechanically from the anther appendages and were analyzed by HPLC. Structure identification was performed by 1H NMR measurements including LC NMR and LC MS expts.